In general, for loops are used when you know exactly how many times you plan to run a loop; a while loop is used when the number of iterations is uncertain. Conditional Statement Basic Structure: if ...

Python has two loop systems: ... Conditional statements (sometimes shortened to conditionals) are a bit like a decision tree.

The creators of the Python language are mulling a new proposal, PEP 622, that would finally bring a pattern matching statement syntax to Python. ... or any of those plus conditional expressions.